body{background-image: url(../images/mountain.jpg);background-size:100% 130%;}
body,h1,input,button{margin:0;padding:0;}
.login{
    width:500px;height:380px;margin:60px auto;background-color:#000;
    filter:alpha(opacity=60);opacity:0.6;border-radius: 20px;
}
h1{
    font-family:"黑体";
    font-size:40px;
    line-height:120px;
    text-align:center;
    color:#fff;
}
input{
    display:block;
    width:300px;
    height:35px;
    margin:0 100px 20px 100px;
    border-radius: 7px;
}
button{
    background-color:#B2BFCB;
    display:block;
    width:304px;
    height:40px;
    margin:0 96px 20px 100px;
    border-radius: 7px;
}
button span{
    font-size:30px;
    line-height:30px;
}